Polymer-supported gadolinium triflate as a convenient and efficient Lewis acid catalyst for acetylation of alcohols and phenols
作者:Hyo-Jin Yoon、Sang-Myung Lee、Jong-Ho Kim、Hong-Jun Cho、Jung-Woo Choi、Sang-Hyeup Lee、Yoon-Sik Lee
DOI:10.1016/j.tetlet.2008.03.005
日期:2008.5
(CMPS-IM-Gd) catalyst was prepared from chloromethyl polystyrene (CMPS) resin using a simple and convenient procedure. This polymeric catalyst was used as an efficient Lewisacidcatalyst for the acetylation of various alcohols and phenols with acetic anhydride, affording high yields under mild conditions. The reaction was completed in a short period of time with small amounts of the catalyst. The catalyst
PSMA BINDING LIGAND-LINKER CONJUGATES AND METHODS FOR USING
申请人:Purdue Research Foundation
公开号:US20160067341A1
公开(公告)日:2016-03-10
Described herein are prostate specific membrane antigen (PSMA) binding conjugates that are useful for delivering therapeutic, diagnostic and imaging agents. Also described herein are pharmaceutical composition containing them and methods of using the conjugates and compositions. Also described are processes for manufacture of the conjugates and the compositions containing them.
A novel silver nanoparticle embedded mesoporous polyaniline (mPANI/Ag) nanocomposite as a recyclable catalyst in the acylation of amines and alcohols under solvent free conditions
作者:Usha Mandi、Anupam Singha Roy、Biplab Banerjee、Sk. Manirul Islam
DOI:10.1039/c4ra06182a
日期:——
Highly dispersed silver nanoparticles (Ag NPs) have been embedded into a mesoporous organic polymer (mPANI) and the material showed high catalytic activity in the acylation of amines and alcohols using acetic acid.
Tetraethylammonium hydrogen carbonate: A cheap, efficient, and recyclable catalyst for transesterification reactions under solvent-free conditions
作者:Isabella Chiarotto
DOI:10.1080/00397911.2016.1233343
日期:2016.11.16
ABSTRACT Tetraethylammonium hydrogen carbonate (TEAHC) was proven to be an efficient catalyst for transesterificationreactions in the absence of solvent. The reaction between isopropenyl or ethyl acetate and an alcohol (not efficient in the absence of catalyst) was induced by the presence of TEAHC, which seems to assist the proton transfer from the alcohol to the ester, yielding the corresponding
Electrogenerated<i>N</i>-Heterocyclic Carbenes in the Room Temperature Parent Ionic Liquid as an Efficient Medium for Transesterification/Acylation Reactions
N-Heterocyclic carbenes (NHCs), generated by electrochemical reduction under galvanostatic control of 1,3-dialkylimidazolium-based ionic liquids, were employed as catalysts in transesterificationreactions in the parent, room temperature ionic liquids (RTILs) as solvents, without the utilisation of any volatile organic solvent or base. The reaction between isopropenyl or ethyl acetate and an alcohol